CN107572732A - Sewage disposal system for dangerous waste disposal factory - Google Patents
Sewage disposal system for dangerous waste disposal factory Download PDFInfo
- Publication number
- CN107572732A CN107572732A CN201711021797.3A CN201711021797A CN107572732A CN 107572732 A CN107572732 A CN 107572732A CN 201711021797 A CN201711021797 A CN 201711021797A CN 107572732 A CN107572732 A CN 107572732A
- Authority
- CN
- China
- Prior art keywords
- water
- processing unit
- sewage
- triple
- sludge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a kind of sewage disposal system for dangerous waste disposal factory, including：First processing units, it is used for process for producing waste water, effluent sewerage and sludge, and sewage enters intermediate pool；Second processing unit, it includes being used for the triple-effect evaporation plant for handling high-salt wastewater, high-salt wastewater effluent sewerage, crystal salt and waste gas after processing, and sewage enters intermediate pool, filled after crystal salt parcel, waste gas is collected using vavuum pump；3rd processing unit, it is used to handle percolate, and permeate and concentrate respectively enter reuse pool and second processing unit；Fourth processing unit, it is used for the sewage and sanitary sewage that handle intermediate pool offer, produces processing water and sludge, and processing water enters reuse pool；Sludge treating block, it is used to receive and handles the sludge of first, fourth processing unit output, discharges firming body.The present invention provides a kind of sewage disposal system for dangerous waste disposal factory, draining is reached reuse standard, realizes sewage zero-discharge.
Description
Technical field
The present invention relates to technical field of sewage, more particularly, to a kind of sewage for dangerous waste disposal factory
Processing system.
Background technology
2003《National dangerous waste and medical waste disposal facility construction plan》Come into effect, end year in 2008
Bottom, planning determine that 55 hazardous wastes centrally dispose project.In dangerous waste disposal factory, hazardous waste mainly using burn,
Materialization and solidification burying treatment process, the technique that tail gas from incinerator purification is mainly combined using semidry method or wet-dry change.
Full factory's waste water of dangerous waste disposal factory enters sewage treatment plant, and sewage disposal is gone in water removal using physicochemical techniques
Heavy metal, biochemical processing process remove the organic matter such as COD in water removal.Materializing strategy technique capital equipment be flotation tank, reduction pond, in
With pond, medicine system, sedimentation basin.Biochemical processing process is aeration tank, sedimentation basin.Advanced treating is filtered using sand filtration and activated carbon
Processing.
The biochemical system fluctuation of service of the sewage treatment plant of part dangerous waste disposal factory, clearance are relatively low at present.
Its main cause includes：(1) pickling tower waste water salt content is higher, total dissolved solidss (TDS) concentration 5~12%, high high-salt wastewater
Into sewage disposal biochemical system, biochemical system bioactivity is caused to decline, COD clearances reduce, or even biochemical system operation
Paralysis.(2) hazardous waste landfill is mainly the hazardous waste after solidifying, and organic concentration is relatively low, and major pollutants are total molten
Solid (TDS) is solved, concentration is 0.5% or so.And as landfill yard run time, salt content increase year by year.Salt content influences
Sewage disposal biochemical system is run.(3) medical waste transfer car, Turnover Box need to clean, sterilized, and the sewage containing chlorine residue enters dirty
Water process biochemical system, influence the operation of sewage disposal biochemical system.
Therefore, it is necessary to a kind of sewage disposal system for dangerous waste disposal factory, to solve the above problems.
The content of the invention
In view of this, it is an object of the invention to propose a kind of sewage disposal system for dangerous waste disposal factory, solution
Sewage after certainly existing sewage disposal system processing can not reach draining reuse standard, it is impossible to the problems such as realizing sewage zero-discharge.
Based on a kind of above-mentioned purpose sewage disposal system for dangerous waste disposal factory provided by the invention, including：
First processing units, the first processing units are used for process for producing waste water, and the production waste water is through materializing strategy
Effluent sewerage and sludge after organics removal, oil slick, heavy metal and suspension, sewage enter intermediate pool；
Second processing unit, the second processing unit are used to handle high-salt wastewater, and the second processing unit includes three
Vaporising device is imitated, the high-salt wastewater effluent sewerage, crystal salt and waste gas, sewage after triple-effect evaporation plant processing enter
The intermediate pool, crystal salt are filled after wrapping up, and waste gas is collected using vavuum pump；
3rd processing unit, the 3rd processing unit are used to handle percolate, and the percolate is gone through reverse-osmosis treated
Except generation permeate and concentrate, permeate enter back after organic matter, total dissolved solidss, suspension, nitrogen, arsenic, mercury and heavy metal
Millpond, concentrate enter the second processing unit；
Fourth processing unit, the fourth processing unit are used to handle sewage and the life dirt that the intermediate pool provides
Water, sewage and sanitary sewage discharge sludge after biochemical treatment organics removal, suspension, nitrogen and phosphorus and meet reuse standard
Water is handled, processing water enters the reuse pool；
Sludge treating block, the sludge treating block are used to receive and handle the first processing units and the described 4th
The sludge of processing unit output, discharge meet the firming body of standard of landfill.
Preferably, the first processing units include being sequentially communicated regulating reservoir, flotation tank, redox pond, neutralize it is anti-
Ying Chi and flocculation inclined plate precipitation pond, the regulating reservoir are used for regulating water quality and water, and the flotation tank is used to remove oil slick and hanged
Float, for going to the redox pond of removing heavy metals and adding the pipeline communication of reducing agent, for going to the institute of removing heavy metals
State and neutralization reaction pond and add the pipeline communication of nertralizer, be provided with the flocculation inclined plate precipitation pond coagulant adding set and
Flocculant adding apparatus.
Preferably, the second processing unit also includes：Compensator, centrifuge and condenser, the compensator and described
The input connection of triple-effect evaporation plant, the output end of the centrifuge and the condenser with the triple-effect evaporation plant connect
It is logical；The compensator is used for balanced water quality and water, and the centrifuge is used for the height to triple-effect evaporation plant output
Salt waste water carries out separation of solid and liquid, and the condenser is used to the steam that the triple-effect evaporation plant exports being condensed into condensed water, cold
Condensate enters the intermediate pool.
Preferably, feed pump, flowmeter and heat exchanger are provided with the compensator, the start and stop of the feed pump are according to institute
State Liquid level in compensator；The flowmeter is used to measure the compensator water flow；Heat exchanger is used for the balance
Tank water outlet is heated.
Preferably, the triple-effect evaporation plant includes：One be sequentially connected in a series arrangement imitates evaporation element, two effect evaporations
Unit and triple effect evaporation unit, effect evaporation element, the two effect evaporation element and the triple effect evaporation unit include
Circulating pump, heater and separator；The circulating pump, which provides the high-salt wastewater to the heater, the heater, to be used for
The high-salt wastewater is heated to improve the high-salt wastewater concentration while produce indirect steam, the separator is used to make raising dense
The high-salt wastewater and indirect steam separation after degree.
Preferably, the triple-effect evaporation plant also includes：Between the one effect evaporation element and the two effects evaporation element
And pass through double evaporation-cooling pipeline communication between the two effect evaporation element and the triple effect evaporation unit.
Preferably, the 3rd processing unit includes the raw water tank, sand filtration filter, cartridge filter and extremely being sequentially connected
Lack two steps ro device, the chemicals dosing plant of regulation acid-base value is provided with the raw water tank, the raw water tank is used to adjust water
Matter and water, the sand filtration filter and the cartridge filter are used to remove oil removal, at least two steps ro device
For carrying out counter-infiltration to the percolate and producing permeate and concentrate, the permeate enters the reuse pool, institute
State concentrate and enter the second processing unit.
Preferably, at least two steps ro device includes：The first order reverse osmosis unit being sequentially connected and the second level
Reverse osmosis unit, the permeate and concentrate of the first order reverse osmosis unit output respectively enter the second level counter-infiltration dress
Put and the second processing unit；The permeate and concentrate of the second level reverse osmosis unit output respectively enter the reuse
Pond and the first order reverse osmosis unit.
Preferably, the fourth processing unit includes denitrification pond, nitrification tank and the membrane bioreactor being sequentially connected, institute
State denitrification pond and the nitrification tank is used for organics removal and nitrogen, the membrane bioreactor is used for organics removal and precipitated
Sludge, and sludge reflux is provided to the denitrification pond, the water outlet of the membrane bioreactor is storable in the reuse pool
It is interior.
Furthermore it is preferred that the sludge treating block includes successively：Mud box and filter press are stored up, the storage mud box is used to store up
The sludge of the first processing units and fourth processing unit output is deposited, and is delivered to the filter press and carries out solid-liquid point
From.
From the above it can be seen that provided by the present invention for the sewage disposal system of dangerous waste disposal factory, with showing
There is technology to compare, there is advantages below：First, different quality is handled using different process, and the water quality after processing can reach reclaimed water
Reuse standard, realize sewage zero-discharge.Secondly, first processing units use physicochemical techniques, high treating effect；Fourth processing unit
Using biochemical process, membrane bioreactor floor space is small, saves sedimentation basin investment, water quality after raising processing, reaches reclaimed water and return
Use standard.Again, the high-salt wastewater of the discharge such as pickling tower is individually handled using second processing unit, high treating effect, is kept away simultaneously
Exempting from high-salt wastewater reduces bioactivity in fourth processing unit, to improve fourth processing unit COD clearances, ensures the everywhere
Manage unit normal operation.Finally, oozing for hazardous waste landfill is handled using pretreatment and multi-stage reverse osmosis device combination
Filtrate makes it can reach Treated sewage reusing standard.
Brief description of the drawings
By the way that embodiment is described below in conjunction with the accompanying drawings, features described above of the invention and technological merit will become
More understand and be readily appreciated that.
Fig. 1 is the signal of the sewage disposal system for dangerous waste disposal factory used in the specific embodiment of the invention
Figure.
Wherein reference：
100：First processing units；200：Second processing unit；300：3rd processing unit；
400：Fourth processing unit；500：Sludge treating block；
101：Regulating reservoir；102：Flotation tank；103：Redox pond；104：Neutralization reaction pond；
105：Flocculation inclined plate precipitation pond；201：Compensator；202：One effect heater；
203：One effect separator；204：Two effect heaters；205：Two effect separators；
206：Triple effect heater；207：Triple effect separator；208：Centrifuge；209：Condenser；
210：Cooling tower；211：Vavuum pump；212：Sub-cylinder device；
301：Raw water tank；302：Sand filtration filter；303：Cartridge filter；
304：First order reverse osmosis unit；305：Second level reverse osmosis unit；306：Chemicals dosing plant；
401：Intermediate pool；402：Denitrification pond；403：Nitrification tank；
404：Membrane bioreactor；405：Reuse pool；501：Store up mud box；502：Filter press.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in more detail.Wherein identical parts are presented with like reference characters.Need what is illustrated
It is that word "front", "rear", "left", "right", the "up" and "down" used in describing below refers to the direction in accompanying drawing.Use
Word " interior " and " outer " refer respectively to towards or away from the direction of particular elements geometric center.In the accompanying drawings, it is related to a plurality of
For transporting the pipeline of sewage, sludge etc., in the present invention, thin continuous lines represent sewage transport pipeline, and discontinuous line represents dirt
Mud feed-line, chain-dotted line represent steam pipeline, and thick continuous lines represent solids transfer line.
Fig. 1 is the signal of the sewage disposal system for dangerous waste disposal factory used in the specific embodiment of the invention
Figure.As shown in figure 1, the sewage disposal system for dangerous waste disposal factory includes：First processing units 100, second processing list
First 200, the 3rd processing unit 300, fourth processing unit 400 and sludge treating block 500.
First processing units 100 are used for process for producing waste water, and production waste water is through materializing strategy organics removal, oil slick, again
Effluent sewerage and sludge after metal and suspension, sewage enter intermediate pool 401.
Second processing unit 200 is used to handle high-salt wastewater, and second processing unit 200 includes triple-effect evaporation plant, high salt
Waste water effluent sewerage, crystal salt and waste gas after triple-effect evaporation plant is handled, sewage enter intermediate pool 401, crystal salt parcel
After fill, waste gas is collected using vavuum pump 211.
3rd processing unit 300 is used to handle percolate, and percolate is through reverse-osmosis treated organics removal, total dissolved solidss
(TDS), suspension, nitrogen, arsenic, mercury and heavy metal (such as copper, lead, cadmium, chromium, nickel, zinc) produce permeate and concentrate afterwards, pass through
Liquid enters reuse pool 405, and concentrate enters second processing unit 200.
Fourth processing unit 400 is used for the sewage and sanitary sewage for handling the offer of intermediate pool 401, sewage and sanitary sewage
Sludge is discharged after biochemical treatment organics removal, suspension, nitrogen and phosphorus and meets the processing water of reuse standard, and processing water enters
Reuse pool 405.
Sludge treating block 500 be used for receive and handle first processing units 100 and fourth processing unit 400 export dirt
Mud, discharge meet the firming body of standard of landfill.
Production waste water, high-salt wastewater, percolate and sanitary sewage are handled by different processing units respectively, are being entered
Avoid various water quality to intersect before entering fourth processing unit, reduce sewage disposal difficulty, different quality is handled using different process
Afterwards, the water quality after processing can reach Treated sewage reusing standard, and draining can be used for carwash, greening, workshop punching ground etc., realize sewage zero-emission
Put；Press filtration fills into firming body to firming body after sludge is collected；Discharged after gas sampling processing.
To improve the treatment effect of production waste water, it is preferable that first processing units 100 include the regulating reservoir being sequentially communicated
101st, flotation tank 102, redox pond 103, neutralization reaction pond 104 and flocculation inclined plate precipitation pond 105, regulating reservoir 101 are used to adjust
Matter of economizing on water and water, flotation tank 102 are used to remove oil slick and suspension, for going to the redox pond 103 of removing heavy metals with throwing
Add the pipeline communication of reducing agent, for going the neutralization reaction pond 104 of removing heavy metals and adding the pipeline communication of nertralizer, flocculation is oblique
Coagulant adding set and flocculant adding apparatus are provided with plate sedimentation basin 105.
In the present embodiment, production waste water initially enters regulating reservoir 101, and regulating reservoir 101 is mainly used in the water of balanced sewage
Matter and water, to ensure the stable operation of subsequent treatment.It is adjusted due to containing oil slick and substantial amounts of suspension in production waste water
Sewage of the pond 101 with after is transported into flotation tank 102 by water pump, to remove oil slick and suspension.
The water outlet of flotation tank 102 enters redox pond 103, in redox pond 103, adds reducing agent, such as sulfuric acid
It is ferrous so that Fe2+With Cr6+Generation redox reaction, to ensure being smoothed out for reaction, also need to add sour (such as hydrochloric acid) drop
PH value in lower oxidation reduction pond 103 so that pH value, which is maintained at, to be adapted in the range of generation redox reaction.Generally, ratio is added
Example is Cr6+:FeSO4·7H2O=1:16, but due to material composition complexity in production waste water, it is contemplated that Fe2+It may consume
Reduce in other materials, and Cr6+The big actual conditions of excursion, the ratio that adds are Cr6+:FeSO4·7H2O=1:20.
Fe2+With Cr6+Reaction equation is：CrO4 2-+3Fe2++8H+→Cr3++3Fe3++4H2O
Cr2O7 2-+6Fe2++14H+→2Cr3++6Fe3++7H2O
In order to force the Fe in production waste water2+With Cr6+It is well mixed, it is provided with action of forced stirring in redox pond 103
Equipment.
The water outlet in redox pond 103 enters neutralization reaction pond 104 and neutralization reaction occurs, and adds acid acceptor or alkalescence
Nertralizer adjusts pH, and the nertralizer generally added is NaOH, production wastewater pH is maintained at 8~9.NaOH can provide OH-, make
The pH value rise of waste water is produced, while causes most of heavy metal ion (including Cr in production waste water3+、Pb2+、Zn2+、Ni2+、
Cu2+Ion etc.) and OH-Precipitate.In order that production waste water mixes fully with NaOH, set in neutralization reaction pond 104 strong
Mixing plant processed.
The water outlet of neutralization reaction pond 104 enters flocculation inclined plate precipitation pond 105, is needed in flocculation inclined plate precipitation pond 105 by mixed
Solidifying agent adding set and flocculant adding apparatus difference dosing coagulant and flocculant, coagulant use PAC (aluminium polychloride),
Flocculant uses PAM (PAMA).Aluminium polychloride is a kind of highly effective inorganic high-molecular coagulant adopting, and it is
Between AlCl3With Al (OH)3Between product, molecular formula is [Al2(OH)nCl6-n]m.Aluminium polychloride is to various water quality adaptability
By force, especially pronounced for the coagulating sedimentation effect of ultra, applicable pH scopes are relatively wide (pH scopes 5~9)；What flocculation was formed
Alumen ustum shaping speed is fast, particle is big and fine and close and weigh, and is easy to settle, can shorten the sedimentation time；And delivery turbidity is low, colourity
It is small.PAMA is relatively thick to suspended particulate, concentration is high, pH value of the particle with positive electricity, water is neutral or alkalescence
Sewage and heavy metal containing wastewater treatment effect are preferable.In flocculation inclined plate precipitation pond 105, flocculant occur hydrolysis, build bridge, absorption,
Winding is acted on, and the little particle sediment net generated after neutralization reaction is caught into bulky grain alumen ustum, ensures the suspension in production waste water
The removal of thing and colourity.Flotation tank 102, redox pond 103, neutralization reaction pond 104, flocculation inclined plate precipitation pond 105 are discharged
Sludge enter storage mud box 501.Flocculation tank is gathered in flocculation inclined plate precipitation pond 105 and inclined-plate clarifying basin is integral, deposition efficiency height,
Residence time is short, floor space is small, has very good removal effect to the suspension for producing waste water.
To improve the treatment effect of high-salt wastewater, it is preferable that second processing unit 200 also includes：Compensator 201, centrifugation
Machine 208 and condenser 209, compensator 201 connect with the input of triple-effect evaporation plant, centrifuge 208 and condenser 209 with
The output end connection of triple-effect evaporation plant；Compensator 201 is used for balanced water quality and water, and centrifuge 208 is used for triple effect evaporation
The high-salt wastewater of device output carries out separation of solid and liquid, and condenser 209 is cold for the steam of triple-effect evaporation plant output to be condensed into
Condensate, condensed water enter intermediate pool 401.
In the present embodiment, compensator 201 is used for homogeneous and water balance, and high-salt wastewater and reverse osmosis concentrated liquid are all flat
Weighing apparatus tank 201 is pumped into triple-effect evaporation plant by water pump after being mixed and handled, and the condensed water that compensator 201 exports is transmitted back to through water pump
Boiler room.In addition, when cleaning second processing unit 200, compensator 201 is not fed, and adding clear water to its inside is cleaned.
To control the effluent quality of compensator 201, it is preferable that be provided with feed pump (not identifying), flow on compensator 201
(not identifying) and heat exchanger (not identifying) are counted, the start and stop of feed pump are according to Liquid level in compensator 201；Flowmeter is used to measure
The water flow of compensator 201；Heat exchanger is used to heat the water outlet of compensator 201.
In the present embodiment, feed pump determines start and stop according to the liquid level inside compensator 201.Heat exchanger uses plate-type heat-exchange
Device, plate type heat exchanger are used to enter preheating to entering the waste water inside triple-effect evaporation plant.
To avoid high-salt wastewater from declining bioactivity in sewage disposal system, the treatment effeciency of high-salt wastewater is improved, it is excellent
Selection of land, triple-effect evaporation plant include：An effect evaporation element, two effect evaporation elements and the triple effect evaporation being sequentially connected in a series arrangement
Unit, an effect evaporation element, two effect evaporation elements and triple effect evaporation unit include circulating pump, heater and separator；Circulation
Pump provides high-salt wastewater to heater, and heater is used to heat high-salt wastewater to improve high-salt wastewater concentration while produce secondary
Steam, separator is for the high-salt wastewater after making raising concentration and indirect steam separation.
In the present embodiment, an effect evaporation element includes an effect circulating pump (not identifying), an effect effect point of heater 202 and one
From device 203, two effect evaporation elements include two effect circulating pumps (not identifying), two effect heaters 204 and two imitate separator 205, triple effect
Evaporation element includes triple effect cycle pump (not identifying), triple effect heater 206 and triple effect separator 207.Steam passes through steaming from boiler
Vapour control valve enters an effect heater 202 by sub-cylinder device 212, is exchanged heat with high-salt wastewater, condensed water is formed after being condensed
Return to boiler water reuse.By taking the running of an effect evaporation element as an example, high-salt wastewater is in the presence of an effect circulating pump, into one
Effect heater 202 is heated, and the high-salt wastewater after caused indirect steam and raising concentration imitates interior point of separator 203 one
From.Buffering area of the high-salt wastewater in effect separator 203 bottom after most raising concentration is transported to two effects by pumped
Heater 204, it is least a portion of improve concentration after high-salt wastewater pass through one effect circulating pump one effect heater 202 in circulation steam
Hair.High-salt wastewater is basic in the operation of two effect evaporation elements, the running of triple effect evaporation unit and above-mentioned one effect evaporation element
It is identical, it will not be repeated here.
High-salt wastewater discharges the high-salt wastewater after improving concentration and is transported to centrifugation by the continuous evaporation of three evaporation elements
Machine 208 carries out separation of solid and liquid, generates crystal salt and mother liquor, then, is filled after crystal salt is wrapped up, mother liquor continues return three
Effect heater is evaporated.
To improve the utilization rate of steam, it is preferable that triple-effect evaporation plant also includes：One effect evaporation element and two effect evaporations are single
Connected between member and between two effect evaporation elements and triple effect evaporation unit by double evaporation-cooling pipeline (not identifying).
In the present embodiment, indirect steam overflows into two effect heaters 204 from the top of an effect separator 203 and added
Heat.Running of the indirect steam from two effect evaporation elements to triple effect evaporation unit is single with being evaporated from an effect evaporation element to two effects
The running of member is essentially identical, will not be repeated here.
In the present embodiment, indirect steam overflows part from triple effect separator 207 can enter condenser 209, mainly contain and wave
The steam of hair property organic matter, subsequently into cooling tower 210, enters intermediate pool after being cooled into condensed water by cooling tower 210
401 carry out biochemical treatment；Incondensible some vapor, suctioned out with vavuum pump 211 and enter waste gas collection device.Vavuum pump
211 are used to make pressure in triple-effect evaporation plant gradually reduce, while make to keep the necessary temperature difference in triple-effect evaporation plant.
For improve percolate treatment effect, it is preferable that the 3rd processing unit 300 include be sequentially connected raw water tank 301,
Sand coarse aggregate ratio filter 302, cartridge filter 303 and at least two steps ro device, regulation acid-base value is provided with raw water tank 301
Chemicals dosing plant 306, raw water tank 301 are used for regulating water quality and water, and sand coarse aggregate ratio filter 302 and cartridge filter 303 are used for away
Suspension, at least two steps ro device are used to carry out counter-infiltration to percolate and produce permeate and concentrate, and permeate is entered
Enter reuse pool 405, concentrate enters second processing unit 200.Cartridge filter 303 can be protected to reverse osmosis membrane, protect
The safe operation of card at least two steps ro device.
In the present embodiment, percolate is introduced into raw water tank 301, and acid adding (sulfuric acid) adjusts pH value to slant acidity, to prevent
Carbonate inorganic salts fouling；It is pumped into by water pump in sand coarse aggregate ratio filter 302, then through sand coarse aggregate ratio filter 302 and cartridge filter
303 remove most suspended substances, to reduce concentration of suspension.After above-mentioned pretreatment, percolate fills at least two steps ro
Middle carry out counter-infiltration is put, permeate is produced and concentrate, permeate enters reuse pool 405；Concentrate enters through pipeline to be balanced
Tank 201, in order to which high-salt wastewater is handled into triple-effect evaporation plant together.
To improve the treatment effect of percolate, water outlet is set to reach recycle water standard, it is preferable that at least two steps ro device
Including：The first order reverse osmosis unit 304 and second level reverse osmosis unit 305 being sequentially connected, first order reverse osmosis unit 304 are defeated
The permeate and concentrate gone out respectively enters second level reverse osmosis unit 305 and second processing unit 200；Second level counter-infiltration dress
Put the permeate of 305 outputs and concentrate respectively enters reuse pool 405 and first order reverse osmosis unit 304.
In the present embodiment, first order reverse osmosis unit 304 can use disc tube reverse osmosis (dt-ro) membrane module, disc tube reverse osmosis (dt-ro)
Membrane module includes：High-pressure plunger pump and permeable membrane group unit, the percolate that cartridge filter 303 exports are entered by high-pressure plunger pump
Enter permeable membrane group unit, caused permeate (water purification) enters the second reverse osmosis unit 305 after permeable membrane group cell processing, concentration
Liquid enters compensator 201 to be handled into triple-effect evaporation plant by pipeline；Second level reverse osmosis unit 305 can use
Disc tube reverse osmosis (dt-ro) membrane module, the permeate that first order reverse osmosis unit 304 exports are pumped into permeable membrane group unit through water pump, locate
Caused permeate (recycle-water) enters reuse pool 405 after reason, and concentrate enters first order reverse osmosis unit by pipeline
304。
To obtain the good recycle-water of water quality, it is preferable that fourth processing unit 400 includes the denitrification pond being sequentially connected
402nd, nitrification tank 403 and membrane bioreactor 404, denitrification pond 402 and nitrification tank 403 are used for organics removal and nitrogen, film life
Thing reactor 404 is used for organics removal and precipitating sludge, and provides sludge reflux, membrane bioreactor to denitrification pond 402
404 water outlet is storable in reuse pool 405.
In the present embodiment, produce waste water through first processing units 100 processing after draining, high-salt wastewater through second processing list
Draining is discharged into intermediate pool 401 together with sanitary sewage after member 200 exports steam treatment, then sequentially enters denitrification pond
402nd, nitrification tank 403 and membrane bioreactor 404 are handled, and membrane bioreactor 404 provides sludge to denitrification pond 402 and returned
Stream, comes organics removal and suspension.The draining of fourth processing unit 400 and percolate are after the processing of the 3rd processing unit 300
It is standby that draining enters reuse pool 405.
Fourth processing unit 400 includes Aerobic Pond (nitrification tank 403), anoxic pond (denitrification pond 402) and ultrafiltration pond, and (film is given birth to
Thing reactor 404), respectively by the aerobic microbiological of high activity and the organic matter of anaerobe removal bio-degradable, and
Oil removal is gone by filter membrane.Fourth processing unit 400 is that the biology of membrane bioreactor 404 is incorporated in Improvement type AO techniques
Handling process, realize the removal to the pollutant such as contained suspension, organic matter, total nitrogen, total phosphorus in sewage.Membrane bioreactor
404 use Flat Membrane, relative to the film of other forms, in water resistant dregs grind impact ability it is stronger.Flat Membrane is mainly profit
Activated sludge and processing water outlet are separated with the tiny aperture of film, it can prevent particulate more than membrane aperture by, so as to
High-quality processing water outlet can be obtained.
To reduce Sludge landfill space, it is preferable that sludge treating block 500 includes successively：Store up mud box 501 and filter press
502, storage mud box 501 is used to store the sludge that first processing units 100 and fourth processing unit 400 export, and is delivered to press filtration
Machine 502 carries out separation of solid and liquid.Store up the sludge in mud box 501 and enter the progress separation of solid and liquid of filter press 502, sludge is fabricated to mud cake
Or firming body, to reduce landfill space.
To avoid sewage discharge, conveyance conduit is provided between filter press 502 and regulating reservoir 101, conveyance conduit is used for will
The filtrate that filter press 502 exports is transported in regulating reservoir 101.Filtrate is collected processing, environment can be effectively protected, is saved
About water resource.
The sewage disposal system for dangerous waste disposal factory illustrated with reference to specific embodiment uses process.
Sewage disposal system for dangerous waste disposal factory is used for the materializing strategy process section of process for producing waste water, is used for
Handle the triple-effect evaporation plant handling process section of high-salt wastewater, the ro treatment technology section for handling percolate, for locating
Manage in intermediate pool the biochemical processing process section of above-mentioned each process section draining and sanitary sewage and for sludge treatment technique section.
In materializing strategy process section, production waste water passes sequentially through regulating reservoir 101, the flotation tank of first processing units 100
102nd, redox pond 103, neutralization reaction pond 104 and flocculation inclined plate precipitation pond 105, then Chinese effluent to intermediate pool 401.
The sludge that flotation tank 102, redox pond 103, neutralization reaction pond 104 and flocculation inclined plate precipitation pond 105 export enters storage mud box
501。
In triple-effect evaporation plant handling process section, high-salt wastewater pass sequentially through second processing unit 200 compensator 201,
One effect heater 202, one imitates separator 203, two and imitates the effect of heater 204, two separator 205, triple effect heater 206 and triple effect point
From device 207, the high concentration high-salt wastewater discharged from triple effect separator 207 enters centrifuge 208 and carries out separation of solid and liquid, in case filling out
Bury；After the condensed device 209 of steam discharged from triple effect separator 207, partly into cooling tower 210, middle water is entered after condensation
Pond 401, residue are unable to condensation portion and enter vavuum pump 211.Steam enters an effect heater 202 by sub-cylinder device 212, from one
Imitate the indirect steam that separator 203 exports and enter two effect heaters 204, the indirect steam exported from two effect separators 205 enters
Triple effect heater 206；The indirect steam exported from triple effect separator 207 enters condenser 209, and condensable part enters cooling
Tower 210 is delivered to intermediate pool 401 after condensing, it is impossible to which the part of condensation enters waste gas collection device by vavuum pump 211.
In ro treatment technology section, percolate passes sequentially through the raw water tank 301 of the 3rd processing unit 300, sand coarse aggregate ratio filtering
Device 302, cartridge filter 303, first order reverse osmosis unit 304 and second level reverse osmosis unit 305, permeate enter recycle-water
Pond 405, concentrate enter the compensator 201 of second processing unit 200.
The above-mentioned each process section draining and sanitary sewage collected in biochemical processing process section, intermediate pool 401 are led to successively
Cross denitrification pond 402, nitrification tank 403 and the membrane bioreactor 404 of fourth processing unit 400, the row of membrane bioreactor 404
It is standby that water enters reuse pool 405.
In sludge treatment technique section, flotation tank 102, redox pond 103, the flocculation inclined plate precipitation pond of neutralization reaction pond 104
105 and membrane bioreactor 404 discharge sludge enter sludge treating block 500 storage mud box 501, so that filter press 502 is pressed
Firming body is formed after contracting.Firming body carries out landfill disposal with crystal salt.
The processing sewage quantity of the sewage treatment plant of table 1
| Sequence number | Title | Unit | Quantity | Processing method |
| 1 | High-salt wastewater | m3/d | 29.72 | Triple-effect evaporation plant processing |
| 3 | Percolate | m3/d | 20 | Reverse-osmosis treated |
| 2 | Production, sanitary sewage | m3/d | 148.9 | Materializing strategy and biochemical treatment |
Table 1 shows the sewage load and sewage type of sewage treatment plant.As shown in table 1, day output is close to 200m3/
D, type include production waste water, high-salt wastewater, percolate and sanitary wastewater.
Treatment effect of the first processing units of table 2 to production waste water
First processing units 100 use physicochemical techniques process for producing waste water.Table 2 shows that first processing units are useless to producing
The treatment effect of water.As shown in table 2, wherein, the clearance of COD (COD) is 30.0%, the removal of suspension (SS)
Rate is 80.0%, ammonia nitrogen (NH3- N) clearance be 10.0%, the clearance of oil slick is 95.0%, to various metals by 58%
~96% clearance not waited；First processing units 100 are drained into intermediate pool 401, so as to subsequent treatment.
Removal effect of the second processing unit of table 3 to total dissolved solidss in high-salt wastewater (TDS)
| Project | Water inlet | Water outlet | Clearance |
| Total dissolved solidss | 71600 | <50 | >99% |
Table 3 shows removal effect of the second processing unit to total dissolved solidss in high-salt wastewater (TDS), as shown in table 3,
After the triple-effect evaporation plant processing of second processing unit 200, the clearance of total dissolved solidss (TDS) can be higher than high-salt wastewater
99%.
Treatment effect of the processing unit of table 4 the 3rd to percolate
Table 4 shows treatment effect of the 3rd processing unit to percolate, and as shown in table 4, the 3rd processing unit 300 is to having
Machine thing (COD), total dissolved solidss (TDS), suspension (SS), ammonia nitrogen (NH3- N), arsenic, mercury and each heavy metal species have it is good
Removal effect, water outlet can meet reuse standard.
The treatment effect of tank drain and sanitary wastewater between the fourth process sewage cell pairs of table 5
| Unit (mg/L) | Water inlet | Water outlet | Clearance |
| COD | 172.3 | 17.2 | 90% |
| SS | 97.4 | 1.0 | 99% |
| NH3-N | 22.5 | 2.3 | 90% |
| Oil slick | 5.5 | 0.5 | 90% |
Intermediate pool 401 gathered first processing units 100 discharge water, the 3rd processing unit 300 discharge water and
Sanitary sewage, the water outlet of intermediate pool 401 use biochemical processing process.Table 5 shows that fourth processing unit is arranged intermediate pool
The treatment effect of water and sanitary wastewater.As shown in table 5, wherein, the clearance of COD (COD) is 90.0%, suspension
(SS) clearance is 99.0%, ammonia nitrogen (NH3- N) clearance be 90.0%, the clearance of oil slick is 90.0%, draining
Indices can meet recycle-water discharge standard.
Understood from the description above with practice, provided by the present invention for the sewage disposal system of dangerous waste disposal factory,
Compared with prior art, there is advantages below：First, different quality is handled using different process, and the water quality after processing can reach
Treated sewage reusing standard, realizes sewage zero-discharge.Secondly, first processing units use physicochemical techniques, high treating effect；Fourth process
Unit uses biochemical process, and membrane bioreactor floor space is small, saves sedimentation basin investment, water quality after raising processing, in reaching
Water circulation standard.Again, the high-salt wastewater of the discharge such as pickling tower is individually handled using second processing unit, high treating effect, together
When avoid high-salt wastewater from reducing bioactivity in fourth processing unit, to improve fourth processing unit COD clearances, ensure the
Four processing unit normal operations.Finally, hazardous waste landfill is handled using pretreatment and multi-stage reverse osmosis device combination
Percolate it is can reach Treated sewage reusing standard.
Those of ordinary skills in the art should understand that：The specific embodiment of the present invention is the foregoing is only, and
The limitation present invention is not used in, it is all within the purport of the present invention, any modification, equivalent substitution and improvements done etc., it all should include
Within protection scope of the present invention.
Claims (10)
- A kind of 1. sewage disposal system for dangerous waste disposal factory, it is characterised in that including：First processing units, the first processing units are used for process for producing waste water, and the production waste water removes through materializing strategy Effluent sewerage and sludge after organic matter, oil slick, heavy metal and suspension, sewage enter intermediate pool；Second processing unit, the second processing unit are used to handle high-salt wastewater, and the second processing unit steams including triple effect Transmitting apparatus, the high-salt wastewater through the triple-effect evaporation plant processing after effluent sewerage, crystal salt and waste gas, sewage enter described in Intermediate pool, crystal salt are filled after wrapping up, and waste gas is collected using vavuum pump；3rd processing unit, the 3rd processing unit are used to handle percolate, and the percolate removes through reverse-osmosis treated to be had Permeate is produced after machine thing, total dissolved solidss, suspension, nitrogen, arsenic, mercury and heavy metal and concentrate, permeate enter recycle-water Pond, concentrate enter the second processing unit；Fourth processing unit, the fourth processing unit is used to handle sewage and sanitary sewage that the intermediate pool provides, dirty Water and sanitary sewage discharge sludge after biochemical treatment organics removal, suspension, nitrogen and phosphorus and meet the processing of reuse standard Water, processing water enter the reuse pool；Sludge treating block, the sludge treating block are used to receive and handle the first processing units and the fourth process The sludge of unit output, discharge meet the firming body of standard of landfill.
- 2. the sewage disposal system according to claim 1 for dangerous waste disposal factory, it is characterised in thatRegulating reservoir, flotation tank, redox pond, neutralization reaction pond and the flocculation that the first processing units include being sequentially communicated are oblique Plate sedimentation basin, the regulating reservoir are used for regulating water quality and water, and the flotation tank is used to remove oil slick and suspension, for removing The redox pond of heavy metal and the pipeline communication for adding reducing agent, for go the neutralization reaction ponds of removing heavy metals with The pipeline communication of nertralizer is added, coagulant adding set and flocculant addition dress are provided with the flocculation inclined plate precipitation pond Put.
- 3. the sewage disposal system according to claim 1 for dangerous waste disposal factory, it is characterised in thatThe second processing unit also includes：Compensator, centrifuge and condenser, the compensator and the triple-effect evaporation plant Input connection, the output end of the centrifuge and the condenser with the triple-effect evaporation plant connects；The balance Tank is used for balanced water quality and water, and the centrifuge is used to consolidate the high-salt wastewater of triple-effect evaporation plant output Liquid separates, and the condenser is used to the steam that the triple-effect evaporation plant exports being condensed into condensed water, described in condensed water enters Intermediate pool.
- 4. the sewage disposal system according to claim 3 for dangerous waste disposal factory, it is characterised in thatFeed pump, flowmeter and heat exchanger are provided with the compensator, the start and stop of the feed pump are according in the compensator Liquid level；The flowmeter is used to measure the compensator water flow；Heat exchanger is used to heat the compensator water outlet.
- 5. the sewage disposal system for dangerous waste disposal factory according to any one of Claims 1-4, its feature exist In,The triple-effect evaporation plant includes：An effect evaporation element, two effect evaporation elements and the triple effect being sequentially connected in a series arrangement Evaporation element, effect evaporation element, the two effect evaporation element and the triple effect evaporation unit include circulating pump, heating Device and separator；The circulating pump provides the high-salt wastewater to the heater, and the heater is used to heat the height Salt waste water improves high-salt wastewater concentration while produces indirect steam, and the separator is used to make the high salt after raising concentration Waste water and indirect steam separation.
- 6. the sewage disposal system according to claim 5 for dangerous waste disposal factory, it is characterised in thatThe triple-effect evaporation plant also includes：Between the one effect evaporation element and the two effects evaporation element and described two imitate Pass through double evaporation-cooling pipeline communication between evaporation element and the triple effect evaporation unit.
- 7. the sewage disposal system for dangerous waste disposal factory according to any one of Claims 1-4, its feature exist In,3rd processing unit includes raw water tank, sand filtration filter, cartridge filter and at least two-stage reverse osmosis being sequentially connected Saturating device, the chemicals dosing plant of regulation acid-base value is provided with the raw water tank, and the raw water tank is used for regulating water quality and water, institute State sand filtration filter and the cartridge filter is used to remove oil removal, at least two steps ro device is used to ooze to described Filtrate carries out counter-infiltration and produces permeate and concentrate, and the permeate enters the reuse pool, and the concentrate enters The second processing unit.
- 8. the sewage disposal system according to claim 7 for dangerous waste disposal factory, it is characterised in thatAt least two steps ro device includes：The first order reverse osmosis unit and second level reverse osmosis unit being sequentially connected, The permeate and concentrate of first order reverse osmosis unit output respectively enter the second level reverse osmosis unit and described the Two processing units；The permeate and concentrate of second level reverse osmosis unit output respectively enter the reuse pool and described First order reverse osmosis unit.
- 9. the sewage disposal system for dangerous waste disposal factory according to any one of Claims 1-4, its feature exist In,The fourth processing unit includes denitrification pond, nitrification tank and the membrane bioreactor being sequentially connected, the denitrification pond It is used for organics removal and nitrogen with the nitrification tank, the membrane bioreactor is used for organics removal and precipitating sludge, and to The denitrification pond provides sludge reflux, and the water outlet of the membrane bioreactor is storable in the reuse pool.
- 10. the sewage disposal system for dangerous waste disposal factory according to any one of Claims 1-4, its feature exist In,The sludge treating block includes successively：Mud box and filter press are stored up, the storage mud box is used to store the first processing list The sludge of first and described fourth processing unit output, and be delivered to the filter press and carry out separation of solid and liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711021797.3A CN107572732B (en) | 2017-10-26 | 2017-10-26 | Sewage treatment system for hazardous waste treatment plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711021797.3A CN107572732B (en) | 2017-10-26 | 2017-10-26 | Sewage treatment system for hazardous waste treatment plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107572732A true CN107572732A (en) | 2018-01-12 |
| CN107572732B CN107572732B (en) | 2020-11-03 |
Family
ID=61040676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711021797.3A Active CN107572732B (en) | 2017-10-26 | 2017-10-26 | Sewage treatment system for hazardous waste treatment plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107572732B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607959A (en) * | 2018-12-30 | 2019-04-12 | 江苏旭龙环境科技有限公司 | A kind of chemical industrial organic wastewater zero-emission concentrating and treating system and application method |
| CN109734255A (en) * | 2019-03-11 | 2019-05-10 | 中国恩菲工程技术有限公司 | Waste water treatment system and wastewater treatment method |
| CN112479400A (en) * | 2020-11-30 | 2021-03-12 | 安徽节源环保科技有限公司 | Recycling and circulating process system for steel wastewater and domestic sewage |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001321767A (en) * | 2000-05-15 | 2001-11-20 | Kawasaki Heavy Ind Ltd | Method and device for treating leachate from waste landfill site |
| CN103961894A (en) * | 2014-05-05 | 2014-08-06 | 南京高捷轻工设备有限公司 | Solid-liquid mixed high-temperature solution waste heat recycling and utilizing device and method |
| CN203861940U (en) * | 2014-05-05 | 2014-10-08 | 南京高捷轻工设备有限公司 | Low-concentration solution evaporation and concentration device |
| CN204151203U (en) * | 2014-09-29 | 2015-02-11 | 广西壮族自治区环境保护科学研究院 | A kind of dangerous waste disposal center Waste Water Treatment |
| CN105999749A (en) * | 2016-07-11 | 2016-10-12 | 浙江东成药业有限公司 | Three-effect falling-film evaporating equipment |
| US20160368783A1 (en) * | 2015-06-22 | 2016-12-22 | Eureka Resources, Llc | Method and System for Treating Wastewater |
| CN106277590A (en) * | 2016-08-25 | 2017-01-04 | 广西壮族自治区环境保护科学研究院 | A kind of oxidoreduction microbial method processes the method for dangerous waste disposal comprehensive wastewater |
| US20170267565A1 (en) * | 2017-05-25 | 2017-09-21 | Xi'an Jiaotong University | Near-zero-release treatment system and method for high concentrated organic wasterwater |
-
2017
- 2017-10-26 CN CN201711021797.3A patent/CN107572732B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001321767A (en) * | 2000-05-15 | 2001-11-20 | Kawasaki Heavy Ind Ltd | Method and device for treating leachate from waste landfill site |
| CN103961894A (en) * | 2014-05-05 | 2014-08-06 | 南京高捷轻工设备有限公司 | Solid-liquid mixed high-temperature solution waste heat recycling and utilizing device and method |
| CN203861940U (en) * | 2014-05-05 | 2014-10-08 | 南京高捷轻工设备有限公司 | Low-concentration solution evaporation and concentration device |
| CN204151203U (en) * | 2014-09-29 | 2015-02-11 | 广西壮族自治区环境保护科学研究院 | A kind of dangerous waste disposal center Waste Water Treatment |
| US20160368783A1 (en) * | 2015-06-22 | 2016-12-22 | Eureka Resources, Llc | Method and System for Treating Wastewater |
| CN105999749A (en) * | 2016-07-11 | 2016-10-12 | 浙江东成药业有限公司 | Three-effect falling-film evaporating equipment |
| CN106277590A (en) * | 2016-08-25 | 2017-01-04 | 广西壮族自治区环境保护科学研究院 | A kind of oxidoreduction microbial method processes the method for dangerous waste disposal comprehensive wastewater |
| US20170267565A1 (en) * | 2017-05-25 | 2017-09-21 | Xi'an Jiaotong University | Near-zero-release treatment system and method for high concentrated organic wasterwater |
Non-Patent Citations (4)
| Title |
|---|
| 吴天龙: "工业危险废物填埋场渗滤液的处置工艺讨论", 《化工管理》 * |
| 孙雅丽: "MBR在危险废物处置中心废水处理中的应用", 《环境科学与技术》 * |
| 张绍坤: "三效蒸发器在高含盐废水处理中的应用", 《中国环保产业》 * |
| 徐守平: "反渗透技术在垃圾填埋场渗滤液处理中的应用", 《山东理工大学学报（自然科学版）》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607959A (en) * | 2018-12-30 | 2019-04-12 | 江苏旭龙环境科技有限公司 | A kind of chemical industrial organic wastewater zero-emission concentrating and treating system and application method |
| CN109734255A (en) * | 2019-03-11 | 2019-05-10 | 中国恩菲工程技术有限公司 | Waste water treatment system and wastewater treatment method |
| CN112479400A (en) * | 2020-11-30 | 2021-03-12 | 安徽节源环保科技有限公司 | Recycling and circulating process system for steel wastewater and domestic sewage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107572732B (en) | 2020-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101851046B (en) | Device for deep treatment and complete recovery of coking wastewater and application method thereof | |
| CN100450592C (en) | Metal smelting factory sewage reclaiming method based on membrane filtering technique | |
| CN105906149B (en) | A kind of processing system and processing method of the zero-emission of chlor-alkali plant strong brine | |
| CN201817357U (en) | Full-reuse treatment device for coking wastewater through Fenton oxidation and double-membrane process | |
| CN109437482A (en) | A kind of the efficient process system and its processing method of pharmaceutical industry production of raw medicine organic wastewater | |
| CN104445706B (en) | A kind of highly concentrated brine concentration method | |
| CN109626727A (en) | A kind of Zero discharge treatment method and system machining waste water | |
| CN206375781U (en) | Treatment of dyeing wastewater and intermediate water reuse system | |
| CN105923903A (en) | Printing and dyeing wastewater zero-discharge system and technology | |
| CN107572732A (en) | Sewage disposal system for dangerous waste disposal factory | |
| KR100921688B1 (en) | Method for acidic wasten in iron industry | |
| CN112321020A (en) | Efficient pretreatment system and method for circulating water sewage | |
| CN103566762A (en) | Immersion type ultra-filtration system | |
| CN209685528U (en) | Waste water treatment system | |
| CN210885688U (en) | Water based paint effluent disposal system | |
| CN107055912A (en) | The Wastewater zero-discharge treatment system of SCR catalyst regeneration waste water | |
| CN111875142A (en) | Zero discharge system and process for salt-containing wastewater of power plant | |
| CN114873857B (en) | System and method for recycling and standard-reaching discharge of carbon dodecyl alcohol ester wastewater | |
| CN106517669A (en) | A/O forward osmosis treatment system and treatment process for black and odorous water | |
| CN208071529U (en) | A kind of electroplating wastewater zero system | |
| CN206033470U (en) | High salt sewage treatment system | |
| CN209537215U (en) | A kind of efficient process system of pharmaceutical industry production of raw medicine organic wastewater | |
| CN208857083U (en) | A kind of high ammonia nitrogen, high organic matter desulfurization wastewater dish tubular type film processing system | |
| CN113003810A (en) | System for make municipal sewage into new water | |
| CN206751598U (en) | A kind of bacteria filter device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201229 Address after: 100083 3rd floor, gate 5, block a, 768 Creative Industry Park, a 5 Xueyuan Road, Haidian District, Beijing Patentee after: Cecep Eco Environmental Technology Co.,Ltd. Patentee after: CECEP CLEANTECH DEVELOPMENT Co.,Ltd. Address before: 100083 3rd floor, South 2-1, block a, Dahua electronics 768 Creative Industrial Park, A5 Xueyuan Road, Haidian District, Beijing Patentee before: CECEP CLEANTECH DEVELOPMENT Co.,Ltd. |